Substitution may refer to:

Arts and media

  • Substitution (poetry), a variation in poetic scansion
  • Substitution (theatre), an acting methodology

Music

  • Chord substitution, swapping one chord for a related one within a chord progression
  • Tritone substitution, reinterpreting a chord via a new root note located an augmented fourth or diminished fifth distant from the root of the original interpretation
  • "Substitution" (Silversun Pickups song), 2009
  • "Substitution" (Purple Disco Machine and Kungs song), 2023

Science and mathematics

Biology and chemistry

  • Base-pair substitution or point mutation, a type of mutation
  • Substitution reaction, where a functional group in a chemical compound is replaced by another group
  • Substituent, the atom or atoms that replaces those of the reactant
  • Substitution, a process in which an allele arises and undergoes fixation

Mathematics and computing

  • Substitution (algebra), replacing occurrences of some symbol by a given value
  • Substitution (logic), a syntactic transformation on strings of symbols of a formal language
  • String substitution, a mapping of letters in an alphabet to languages
  • Substitution of a character in a string, one of the single-character edits used to define the Levenshtein distance
  • Substitution cipher, a method of encryption
  • Integration by substitution, a method for finding antiderivatives and integrals

Other uses in science

  • Substitution (economics), switching between alternative consumable goods as their relative prices change
  • Attribute substitution, a psychological process thought to underlie a number of cognitive biases and perceptual illusions
  • Substitution method, a method of measuring the transmission loss of an optical fiber

Other uses

  • Substitution (law), the replacement of a judge
  • Substitution (sport), where a sports team is able to change one player for another during a match
  • Substitution therapy or opiate replacement therapy
  • Import substitution industrialization, a trade and economic policy
  • Penal substitution, a theory of the atonement within Christian theology
  • Simultaneous substitution, a practice requiring Canadian television distribution companies to substitute a non-local station signal with the local signal

Within Wikipedia

  • Help:Substitution, help performing substitution on Wikipedia pages
  • Special:ExpandTemplates, page that shows what will result from substitution
  • Wikipedia:Substitution, where, when, how, and what about using substitution on Wikipedia

See also

  • Substitute (disambiguation)